However the transaction f2d6c45a72e75f99842de460c59d1ba12d3adb39aecdd9cf37fbd9de3ca9f6b4 (which did send the 0,1 BTC to my mobile) also did send to 1JJQ7s6kLX46FjAcsHNejGADVT6GMHne8n the amount of 0.01091471 BTC. Which is exactly the difference between what my local bitcoin-qt and blockchain.info show for my wallet. 1JJQ7s6kLX46FjAcsHNejGADVT6GMHne8n is not any address of mine.

Right at the end of that page is the paragraph "The wallet file contains the private keys for change addresses, and they can receive and send coins normally. However, the GUI in the default client does not display them in the address book."